UFO Sighting in Oscoda, Michigan on September 15th 2015 – Two spheres hovering then depart

Around Mid September 2015 around 10 pm my Girlfriend and I were in a boat fishing the Ausable River mouth area when I observed two very bright what I believed to be stars. I mentioned to my girlfriend that I have never noticed those two stars before as I observe the skies often. I was quite taken by them and would look at them often for about 10 minutes when I noticed one of them started to move off towards the East. I was shocked and pointed the event out to my girlfriend who was also stunned and surprised. After about two minutes the second object also departed in the exact same direction. Seemed to accelerate out of sight within a minute or a minute and a half. We have never observed the objects again.